Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Llorenç Cabrera-Bosquet is active.

Publication


Featured researches published by Llorenç Cabrera-Bosquet.


Journal of Experimental Botany | 2011

Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2

Iker Aranjuelo; Llorenç Cabrera-Bosquet; Rosa Morcuende; Jean Christophe Avice; Salvador Nogués; J. L. Araus; Rafael Martínez-Carrasco; Pilar Pérez

Wheat plants (Triticum durum Desf., cv. Regallo) were grown in the field to study the effects of contrasting [CO2] conditions (700 versus 370 μmol mol−1) on growth, photosynthetic performance, and C management during the post-anthesis period. The aim was to test whether a restricted capacity of sink organs to utilize photosynthates drives a loss of photosynthetic capacity in elevated CO2. The ambient 13C/12C isotopic composition (δ13C) of air CO2 was changed from –10.2‰ in ambient [CO2] to –23.6‰ under elevated [CO2] between the 7th and the 14th days after anthesis in order to study C assimilation and partitioning between leaves and ears. Elevated [CO2] had no significant effect on biomass production and grain filling, and caused an accumulation of C compounds in leaves. This was accompanied by up-regulation of phosphoglycerate mutase and ATP synthase protein content, together with down-regulation of adenosine diphosphate glucose pyrophosphatase protein. Growth in elevated [CO2] negatively affected Rubisco and Rubisco activase protein content and induced photosynthetic down-regulation. CO2 enrichment caused a specific decrease in Rubisco content, together with decreases in the amino acid and total N content of leaves. The C labelling revealed that in flag leaves, part of the C fixed during grain filling was stored as starch and structural C compounds whereas the rest of the labelled C (mainly in the form of soluble sugars) was completely respired 48 h after the end of labelling. Although labelled C was not detected in the δ13C of ear total organic matter and respired CO2, soluble sugar δ13C revealed that a small amount of labelled C reached the ear. The 12CO2 labelling suggests that during the beginning of post-anthesis the ear did not contribute towards overcoming flag leaf carbohydrate accumulation, and this had a consequent effect on protein expression and photosynthetic acclimation.


Plant Cell and Environment | 2009

Oxygen isotope enrichment (Δ18O) reflects yield potential and drought resistance in maize.

Llorenç Cabrera-Bosquet; Ciro Sanchez; José Luis Araus

Measurement of stable isotopes in plant dry matter is a useful phenotypic tool for speeding up breeding advance in C(3) crops exposed to different water regimes. However, the situation in C(4) crops is far from resolved, since their photosynthetic metabolism precludes (at least in maize) the use of carbon isotope discrimination. This paper investigates the use of oxygen isotope enrichment (Delta(18)O) as a new secondary trait for yield potential and drought resistance in maize (Zea mays L). A set of tropical maize hybrids developed by the International Maize and Wheat Improvement Center was grown under three contrasting water regimes in field conditions. Water regimes clearly affected plant growth and yield. In accordance with the current theory, a decrease in water input was translated into large decreases in stomatal conductance and increases in leaf temperature together with concomitant (18)O enrichment of plant matter (leaves and kernels). In addition, kernel Delta(18)O correlated negatively with grain yield under well-watered and intermediate water stress conditions, while it correlated positively under severe water stress conditions. Therefore, genotypes showing lower kernel Delta(18)O under well-watered and intermediate water stress had higher yields in these environments, while the opposite trend was found under severe water stress conditions. This illustrates the usefulness of Delta(18)O for selecting the genotypes best suited to differing water conditions.


Plant Cell and Environment | 2011

Dual Δ13C/δ18O response to water and nitrogen availability and its relationship with yield in field‐grown durum wheat

Llorenç Cabrera-Bosquet; Rossella Albrizio; Salvador Nogués; J. L. Araus

The combined use of stable carbon and oxygen isotopes in plant matter is a tool of growing interest in cereal crop management and breeding, owing to its relevance for assessing the photosynthetic and transpirative performance under different growing conditions including water and N regimes. However, this method has not been applied to wheat grown under real field conditions. Here, plant growth, grain yield (GY) and the associated agronomic components, carbon isotope discrimination (Δ¹³C) plus oxygen isotope composition (δ¹⁸O) as well as leaf and canopy gas exchange were measured in field-grown wheat subjected to different water and N availabilities. Water limitation was the main factor affecting yield, leaf and canopy gas exchange and Δ¹³C and δ¹⁸O, whereas N had a smaller effect on such traits. The combination of Δ¹³C and δ¹⁸O gave a clear advantage compared with gas exchange measurements, as it provides information on the instantaneous and the long-term plant photosynthetic and transpirative performance and are less labour intensive than gas exchange measurements. In addition, the combination of plant Δ¹³C and δ¹⁸O predicted differences in GY and related agronomical parameters, providing agronomists and breeders with integrative traits for selecting crop management practices and/or genotypes with better performance under water-limiting and N-limiting conditions.


New Phytologist | 2010

Is heterosis in maize mediated through better water use

J. L. Araus; Ciro Sanchez; Llorenç Cabrera-Bosquet

SUMMARY *Heterosis increases yield potential and improves adaptation to stress in maize (Zea mays); however, the underlying mechanisms remain elusive. *A set of tropical inbred lines and their hybrids were grown in the field for 2 yr under three different water regimes. First-year plant water use was evaluated by measuring instantaneous traits (stomatal conductance (g(s)) and steady-state chlorophyll fluorescence (F(s))) in individual leaves together with time-integrative traits, which included mineral accumulation in the whole leaves of plants and oxygen isotope enrichment above source water (Delta(18)O) and carbon isotope discrimination (Delta(13)C) in the same pooled leaves and in mature kernels. Second-year water use was evaluated by measuring leaf temperature, g(s) and relative water content (RWC). *Within each growing condition, hybrids showed higher F(s), mineral accumulation, RWC, and lower leaf temperature, Delta(18)O and Delta(13)C than inbred lines. Therefore, hybrids had a better water status than inbred lines, regardless of the water conditions. Differences in grain yield across growing conditions were explained by differences in water-use traits, with hybrids and inbred lines following a common pattern. Within each growing condition, most variations in grain yield, between hybrids and inbred lines, were also explained by differences in plant water-use traits. *Heterosis in tropical maize seems to be mediated by improved water use, irrespective of the water conditions during growth.


Functional Plant Biology | 2013

Comparative performance of δ13C, δ18O and δ15N for phenotyping durum wheat adaptation to a dryland environment

J. L. Araus; Llorenç Cabrera-Bosquet; Maria Dolores Serret; Jordi Bort; Maria Teresa Nieto-Taladriz

Grain yield and the natural abundance of the stable isotope compositions of carbon (δ13C), oxygen (δ18O) and nitrogen (δ15N) of mature kernels were measured during 3 consecutive years in 10 durum wheat genotypes (five landraces and five modern cultivars) subjected to different water and N availabilities in a Mediterranean location and encompassing a total of 12 trials. Water limitation was the main environmental factor affecting yield, δ13C and δ18O, whereas N fertilisation had a major effect on δ15N. The genotypic effect was significant for yield, yield components, δ13C, δ18O and δ15N. Landraces exhibited a higher δ13C and δ15N than cultivars. Phenotypic correlations of δ13C and δ18O with grain yield were negative, suggesting that genotypes able to sustain a higher water use and stomatal conductance were the most productive and best adapted; δ15N was also negatively correlated with grain yield regardless of the growing conditions. δ13C was the best isotopic trait in terms of genetic correlation with yield and heritability, whereas δ18O was the worst of the three isotopic abundances. The physiological basis for the different performance of the three isotopes explaining the genotypic variability in yield is discussed.


Annals of Botany | 2009

How yield relates to ash content, Δ13C and Δ18O in maize grown under different water regimes

Llorenç Cabrera-Bosquet; Ciro Sanchez; José Luis Araus

BACKGROUND AND AIMS Stable isotopes have proved a valuable phenotyping tool when breeding for yield potential and drought adaptation; however, the cost and technical skills involved in isotope analysis limit its large-scale application in breeding programmes. This is particularly so for Delta(18)O despite the potential relevance of this trait in C(4) crops. The accumulation of minerals (measured as ash content) has been proposed as an inexpensive way to evaluate drought adaptation and yield in C(3) cereals, but little is known of the usefulness of this measure in C(4) cereals such as maize (Zea mays). The present study investigates how yield relates to ash content, Delta(13)C and Delta(18)O, and evaluates the use of ash content as an alternative or complementary criterion to stable isotopes in assessing yield potential and drought resistance in maize. METHODS A set of tropical maize hybrids developed by CIMMYT were subjected to different water availabilities, in order to induce water stress during the reproductive stages under field conditions. Ash content and Delta(13)C were determined in leaves and kernels. In addition, Delta(18)O was measured in kernels. KEY RESULTS Water regime significantly affected yield, ash content and stable isotopes. The results revealed a close relationship between ash content in leaves and the traits informing about plant water status. Ash content in kernels appeared to reflect differences in sink-source balance. Genotypic variation in grain yield was mainly explained by the combination of ash content and Delta(18)O, whilst Delta(13)C did not explain a significant percentage of such variation. CONCLUSIONS Ash content in leaves and kernels proved a useful alternative or complementary criterion to Delta(18)O in kernels for assessing yield performance in maize grown under drought conditions.


Cereal Research Communications | 2011

NDVI as a potential tool for predicting biomass, plant nitrogen content and growth in wheat genotypes subjected to different water and nitrogen conditions

Llorenç Cabrera-Bosquet; G. Molero; A.M. Stellacci; J. Bort; S. Nogues; J.L. Araus

The application of spectroradiometric index such as the normalized difference vegetation index (NDVI) to assess green biomass or nitrogen (N) content has focused on the plant canopy in precision agriculture or breeding programs. However, little is known about the usefulness of these techniques in isolated plants. The few reports available propose the use of a spectroradiometer in combination with special adaptors that improve signal acquisition from plants, but this makes measurements relatively slow and unsuitable. Here we studied the direct use (i.e. without adaptors) of a commercial cost-effective spectroradiometer, GreenSeeker™ (NTech Industries Ins., Ukiah, California, USA) provided with an active sensor (i.e. equipped with its own source of radiation) for measuring NDVI in four genotypes of durum wheat (Triticum turgidum L. var. durum) grown in pots under a range of water and N regimes. Strong correlations were observed between NDVI measurements and dry aboveground biomass (AB), total green area (TG...


Rapid Communications in Mass Spectrometry | 2009

13C/12C isotope labeling to study carbon partitioning and dark respiration in cereals subjected to water stress

Iker Aranjuelo; Llorenç Cabrera-Bosquet; Shady A. Mottaleb; J. L. Araus; Salvador Nogués

Despite the relevance of carbon (C) loss through respiration processes (with its consequent effect on the lower C availability for grain filling), little attention has been given to this topic. Literature data concerning the role of respiration in cereals are scarce and these have been produced using indirect methods based on gas-exchange estimations. We have developed a new method based on the capture of respired CO(2) samples and their analysis by gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). In order to analyse the main processes involved in the C balance during grain filling (photosynthesis, respiration, allocation and partitioning) the ambient isotopic (13)C/(12)C composition (delta(13)C) of the growth chamber was modified during this period (delta(13)C ca. -12.8 +/- 0.3 per thousand to ca. -20.0 +/- 0.2 per thousand). The physiological performance, together with the C allocation on total organic matter (TOM) and respiration of wheat (Triticum aestivum L., var. Califa sur) and two hybrids, tritordeum (X Tritordeum Asch. & Graebn line HT 621) and triticale (X Triticosecale Wittmack var. Imperioso), were compared during post-anthesis water stress. In spite of the larger ear DM/total ratio, especially under drought conditions, the grain filling of triticale and wheat was mainly carried out with pre-anthesis C, while the majority of C assimilated during post-anthesis was invested in respiration processes. In the case of wheat and tritordeum, the C balance data suggested a reallocation during grain filling of photoassimilates stored prior to anthesis from shoot to ear. Furthermore, the lower percentage of labeled C on respired CO(2) of droughted tritordeum plants, together with the lower plant biomass, explained the fact that those plants had more C available for grain filling.


Annals of Applied Biology | 2007

The combined effect of constant water deficit and nitrogen supply on WUE, NUE and Δ13C in durum wheat potted plants

Llorenç Cabrera-Bosquet; Gemma Molero; Jordi Bort; Salvador Nogués; José Luis Araus


Environmental and Experimental Botany | 2009

Photosynthetic capacity of field-grown durum wheat under different N availabilities: a comparative study from leaf to canopy.

Llorenç Cabrera-Bosquet; Rossella Albrizio; J. L. Araus; Salvador Nogués

Collaboration


Dive into the Llorenç Cabrera-Bosquet's collaboration.

Top Co-Authors

Avatar

J. L. Araus

University of Barcelona

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Iker Aranjuelo

Spanish National Research Council

View shared research outputs
Top Co-Authors

Avatar

Jordi Bort

University of Barcelona

View shared research outputs
Top Co-Authors

Avatar

Ciro Sanchez

International Maize and Wheat Improvement Center

View shared research outputs
Top Co-Authors

Avatar

José Luis Araus

International Maize and Wheat Improvement Center

View shared research outputs
Top Co-Authors

Avatar

Gemma Molero

University of Barcelona

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Anna Febrero

University of Barcelona

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge